[Troubleshooting] Lỗi The group policy client service failed the logon trên Windows

Lỗi thường bắt gặp khi sử dụng hệ thống domain controller The group policy client service failed the logon trên Windows 7 khi đăng nhập vào PC. Cách khắc phục: Bước 1: Đổi tên folder tương ứng với user trong folder C:\Users Ví dụ: ChungUser thành...

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[Troubleshooting] How to fix error Application Blocked by Security Settings

Error message:  Application Blocked by Security Settings Your security setting have blocked an application signed with an expired or not-yet-valid certificate from running. Troubleshooting: - Create file exception.sites at URL: C:\Users\<username>\AppData\LocalLow\Sun\Java\Deployment\security Content...

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[Troubleshooting] How to fix HeartBleed openSSL bug on Ubuntu

The Heartbleed Bug is a serious vulnerability in the popular OpenSSL cryptographic software library. This weakness allows stealing the information protected, under normal conditions, by the SSL/TLS encryption used to secure the Internet. SSL/TLS provides...

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[Troubleshooting] apt-get error problem Ubuntu 12.04 and 14.04

How to fix some of the common errors encountered using ubuntu, if you get an error similar yet, please post immediately comment in this article, we will fix to you immediatel...

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[Troubleshooting] How to troubleshoot mail server marked as spam

1. The cause was listed as IP blacklist Normally, during the using process, your public IP is often marked as spam on the blacklist by Spam mail Prevention organization. Therefore, your sent mails from your server will be listed as spam mails (or...

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